<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <script src="../js/jquery.min.js"></script>
    <title>欢迎页</title>
    <style>
        button:last-child{width: 100%;height: 200px}

        #center_div{
            position: absolute;
            top: 50%;
            left: 50%;
            width: 300px;
            height: 200px;
            margin-top:-100px ;
            margin-left: -150px;

        }
    </style>
</head>
<body>
<div style="text-align: center;text-align-all: center;" id="center_div">

    <button type="button"><a href="/export"><h1>待办事项下载</h1></a></button>

</div>

<script>

</script>

</body>
</html>